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Posted by Barbara on September 6, 2024 at 11:04pm 0 Comments 0 Likes
Posted by Wendydydydy on September 6, 2024 at 11:03pm 0 Comments 0 Likes
Zoo wastes no time fertilizing garden
Shanghai Zoo's animal waste is being put to good use at the Chenshan Botanical Garden.There are more than 5,000 animals, of 470 species, at the zoo in Changning District. They consume more than 1,800 tons of feed every year and produced over 1,200 tons of excrement last year.To get more Changning District, you can visit shine news official website.
The excrement of the elephants alone fills 10 garbage bins, each 240 liters, every day."We sort the waste before it is transported to the Chenshan Botanical Garden to ensure it can be further used," said cleaner Fan Guangjun.Each year about 2,000 tons of water plants and 1,500 tons of withered grass and flowers are removed from the Chenshan Botanical Garden, said Tu Li, deputy director of the the garden's horticulture landscape department.
They are mixed with the animal waste from the zoo. The waste is sprayed with biological agents and stirred. Natural fermentation then occurs and produces an organic mixture after three or four months.
"During fermentation, the percolate produced by the waste is also collected and turned into a nutrient solution for plants such as cherry blossom and irises," said Tu.
The organic solvents are mixed into soil to reduce alkalinity and increase organic matters. They can also be applied to trees and flowers, providing nutrient, said Tu.At Chenshan, the organic solvents have been applied to Chinese roses to produce quality blooms for an exhibition that will open this month.
Tree branch waste has also been turned into organic solvents or laid over roads at the garden.
More than 5,000 tons of gardening and greenery wastes can be turned into over 1,000 tons of organic solvents.
"It saves purchasing organic solvents and paying for removal, and promotes environmental protection at the same time," said Cai Yunpeng, director of Chenshan's planning and construction department.
Shanghai's soil conditions are relatively alkaline and lack organic matter, said experts with the Shanghai Greenery and Public Sanitation Bureau.
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